Index: src/applications/phame/skins/PhameBasicTemplateBlogSkin.php
===================================================================
--- src/applications/phame/skins/PhameBasicTemplateBlogSkin.php
+++ src/applications/phame/skins/PhameBasicTemplateBlogSkin.php
@@ -30,14 +30,15 @@
     }
 
     $map = CelerityResourceMap::getInstance();
-    $symbol_info = $map->lookupSymbolInformation('syntax-highlighting-css');
+    $resource_symbol = 'syntax-highlighting-css';
+    $resource_uri = $map->getFullyQualifiedURIForSymbol($resource_symbol);
 
     $this->cssResources[] = phutil_tag(
       'link',
       array(
         'rel'   => 'stylesheet',
         'type'  => 'text/css',
-        'href'  => PhabricatorEnv::getCDNURI($symbol_info['uri']),
+        'href'  => $resource_uri,
       ));
 
     $this->cssResources = phutil_implode_html("\n", $this->cssResources);
Index: src/infrastructure/celerity/CelerityResourceMap.php
===================================================================
--- src/infrastructure/celerity/CelerityResourceMap.php
+++ src/infrastructure/celerity/CelerityResourceMap.php
@@ -104,7 +104,7 @@
     return $paths;
   }
 
-  public function lookupSymbolInformation($symbol) {
+  private function lookupSymbolInformation($symbol) {
     return idx($this->resourceMap, $symbol);
   }
 
@@ -121,11 +121,45 @@
 
 
   /**
+   * Get the epoch timestamp of the last modification time of a symbol.
+   *
+   * @param string Resource symbol to lookup.
+   * @return int Epoch timestamp of last resource modification.
+   */
+  public function getModifiedTimeForSymbol($symbol) {
+    $info = $this->lookupSymbolInformation($symbol);
+    if ($info) {
+      $root = dirname(phutil_get_library_root('phabricator')).'/webroot';
+      return (int)filemtime($root.$info['disk']);
+    }
+    return 0;
+  }
+
+
+  /**
+   * Return the fully-qualified, absolute URI for the resource associated with
+   * a symbol. This method is fairly low-level and ignores packaging.
+   *
+   * @param string Resource symbol to lookup.
+   * @return string|null  Fully-qualified resource URI, or null if the symbol
+   *                      is unknown.
+   */
+  public function getFullyQualifiedURIForSymbol($symbol) {
+    $info = $this->lookupSymbolInformation($symbol);
+    if ($info) {
+      return idx($info, 'uri');
+    }
+    return null;
+  }
+
+
+  /**
    * Return the fully-qualified, absolute URI for the resource associated with
    * a resource name. This method is fairly low-level and ignores packaging.
    *
    * @param string Resource name to lookup.
-   * @return string Fully-qualified resource URI.
+   * @return string|null  Fully-qualified resource URI, or null if the name
+   *                      is unknown.
    */
   public function getFullyQualifiedURIForName($name) {
     $info = $this->lookupFileInformation($name);
@@ -140,7 +174,8 @@
    * Return the resource symbols required by a named resource.
    *
    * @param string Resource name to lookup.
-   * @return list<string> List of required symbols.
+   * @return list<string>|null  List of required symbols, or null if the name
+   *                            is unknown.
    */
   public function getRequiredSymbolsForName($name) {
     $info = $this->lookupFileInformation($name);
@@ -151,4 +186,19 @@
   }
 
 
+  /**
+   * Return the resource name for a given symbol.
+   *
+   * @param string Resource symbol to lookup.
+   * @return string|null Resource name, or null if the symbol is unknown.
+   */
+  public function getResourceNameForSymbol($symbol) {
+    $info = $this->lookupSymbolInformation($symbol);
+    if ($info) {
+      return idx($info, 'disk');
+    }
+    return null;
+  }
+
+
 }
Index: src/infrastructure/celerity/CelerityStaticResourceResponse.php
===================================================================
--- src/infrastructure/celerity/CelerityStaticResourceResponse.php
+++ src/infrastructure/celerity/CelerityStaticResourceResponse.php
@@ -249,8 +249,7 @@
         $mtime = 0;
         foreach ($resource['symbols'] as $symbol) {
           $map = CelerityResourceMap::getInstance();
-          $symbol_info = $map->lookupSymbolInformation($symbol);
-          $mtime = max($mtime, (int)filemtime($root.$symbol_info['disk']));
+          $mtime = max($mtime, $map->getModifiedTimeForSymbol($symbol));
         }
       }
 
Index: src/infrastructure/lint/linter/PhabricatorJavelinLinter.php
===================================================================
--- src/infrastructure/lint/linter/PhabricatorJavelinLinter.php
+++ src/infrastructure/lint/linter/PhabricatorJavelinLinter.php
@@ -153,24 +153,24 @@
       $requires = array();
     }
 
-    foreach ($requires as $key => $symbol_name) {
-      $symbol_info = $celerity->lookupSymbolInformation($symbol_name);
-      if (!$symbol_info) {
+    foreach ($requires as $key => $requires_symbol) {
+      $requires_name = $celerity->getResourceNameForSymbol($requires_symbol);
+      if ($requires_name === null) {
         $this->raiseLintAtLine(
           0,
           0,
           self::LINT_UNKNOWN_DEPENDENCY,
-          "This file @requires component '{$symbol_name}', but it does not ".
-          "exist. You may need to rebuild the Celerity map.");
+          "This file @requires component '{$requires_symbol}', but it does ".
+          "not exist. You may need to rebuild the Celerity map.");
         unset($requires[$key]);
         continue;
       }
 
-      if (preg_match('/\\.css$/', $symbol_info['disk'])) {
+      if (preg_match('/\\.css$/', $requires_name)) {
         // If JS requires CSS, just assume everything is fine.
         unset($requires[$key]);
       } else {
-        $symbol_path = 'webroot'.$symbol_info['disk'];
+        $symbol_path = 'webroot'.$requires_name;
         list($ignored, $req_install) = $this->getUsedAndInstalledSymbolsForPath(
           $symbol_path);
         if (array_intersect_key($req_install, $external_classes)) {